body, p, ul, ol, li, dl, dt, dd, h1, h2, h3, h4, h5, h6, form, fieldset, legend, input, select, textarea, button, th, td, menu {
    margin: 0;
    padding: 0;
}

* {
    box-sizing: border-box
}

ul, dl, ol {
    list-style: none;
}

img, fieldset, input[type="submit"] {
    border: 0 none;
}

em {
    font-style: normal;
}

strong {
    font-weight: normal;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

button, input[type="button"] {
    cursor: pointer;
    border: 0 none;
}

a, button, input, img {
    -webkit-touch-callout: none;
}

img {
    pointer-events:none;
    /*禁止图片的点击事件，例如长按保存图片*/
}

input, select, textarea {
    outline: none;
}

a {
    text-decoration: none;
}

.fl {
    float: left
}

.fr {
    float: right
}

.clear {
    clear: both;
}

.clearfix::after{
    content: "";
    display: block;
    clear: both;
}

html, body {
    /*禁止用户选择元素*/
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    -khtml-user-select: none;
    /*禁止元素点击出现半透明黑色背景*/
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

html {
    /* height: 100%; */
    width: 100%;
    font-family: 'Heiti SC', 'Microsoft YaHei';
    outline: 0;
    -webkit-text-size-adjust: none;
}

body {
    /* height: 100%; */
    margin: 0;
    position: relative;
}